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To study the relationship between serum inhibin B and sex steroid concentrations and pituitary FSH responsiveness to GnRH in boys in early puberty, and to examine serum inhibin B levels in prepubertal boys with different timing of the onset of gonadotropin deficiency (GD).

Signaling between the pituitary gland and the testes: inverse relationship between serum FSH and inhibin B concentrations in boys in early puberty